Definition of major noun from the Oxford Advanced Learner's Dictionary

      

    major

     noun
    noun
    BrE BrE//ˈmeɪdʒə(r)//
     
    ; NAmE NAmE//ˈmeɪdʒər//
     
    Exams and degrees, The army, University people, The air force, Study routes
     
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  1. 1 [countable] (abbreviation Maj.) an officer of fairly high rank in the army or the US air force Major Smith He's a major in the US army. see also drum major, sergeant major See related entries: The army, The air force
  2. 2[countable] (North American English) the main subject or course of a student at college or university Her major is French. compare minor Wordfinderdegree, dissertation, education, graduate, hall of residence, lecture, major, seminar, tutorial, university See related entries: Exams and degrees, Study routes
  3. 3[countable] (North American English) a student studying a particular subject as the main part of their course She's a French major. See related entries: University people, Study routes
  4. 4the majors [plural] (sport, North American English) the major leagues
  5. Word Origin Middle English: from Latin, comparative of magnus ‘great’; perhaps influenced by French majeur.
See the Oxford Advanced American Dictionary entry: major